A reinstall may not solve you issue due to a few reasons, In your options when you right click dods do you have cloudsync check marked. I would recommend unchecking that, prior to any type of fix. Secondly if you google how to delete just the texture files from the steam dods folder, verify the integrity of the game files it should automatically reinstall any missing files to their stock values.
Warren 1st MRB's post in Any ideas why certain parts of certain maps are invisible for me? was marked as the answer